Ronald Koorm has given talks and lectures on the codebreaking outstations for several years - this is the last piece of the amazing Bletchley jigsaw.
Full of new stories: who built the first electronic digital computer? Tommy Flowers - but not at Bletchley - at Dollis Hill, for the Post Office
The first detailed study of the Bombe registers at the National archives, which brings a new understanding of the perennially fascinating Bletchley story.
